<template>
  <div id="main" class="w-140 h-70" ref="main">

  </div>
</template>

<script>
// 引入 echarts 核心模块，核心模块提供了 echarts 使用必须要的接口。
import * as echarts from 'echarts';
// 引入柱状图图表，图表后缀都为 Chart
import { LineChart } from 'echarts';
// 引入提示框，标题，直角坐标系，数据集，内置数据转换器组件，组件后缀都为 Component
import {
  TitleComponent,
  TooltipComponent,
  GridComponent,
  DatasetComponent,
  TransformComponent
} from 'echarts';
// 标签自动布局，全局过渡动画等特性
import { LabelLayout, UniversalTransition } from 'echarts';
// 引入 Canvas 渲染器，注意引入 CanvasRenderer 或者 SVGRenderer 是必须的一步
import { CanvasRenderer } from 'echarts';

export default {
  name: "index",
  data() {
    return {
      myEcharts: null,
      data: [],
      oneDay: 24 * 3600 * 1000
    }
  },
  props: ['dataObj'],
  watch: {
    // 'dataObj.current_time' (val) {
    //   // this.data.shift()
    //   this.data.push(this.dataObj.close / 1)
    //   let option = {
    //     series: [
    //       {
    //         data: this.data,
    //       }
    //     ]
    //   };
    //   this.myEcharts.setOption(option);
    // }
  },
  created() {
    // 注册必须的组件
    // echarts.use([
    //   TitleComponent,
    //   TooltipComponent,
    //   GridComponent,
    //   DatasetComponent,
    //   TransformComponent,
    //   LineChart,
    //   LabelLayout,
    //   UniversalTransition,
    //   CanvasRenderer
    // ]);
  },
  methods: {
    randomData(time) {
      let now = new Date(1997, 9, 3);
      let oneDay = 24 * 3600 * 1000;
      let value = this.dataObj.close / 1;
      now = new Date(+now + oneDay);
      return {
        name: now.toString(),
        value: [
          [now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/'),
          Math.round(value)
        ]
      };
    }
  },
  mounted() {
    const width = document.getElementById('main').clientWidth;
    const height = document.getElementById('main').clientHeight;
    // console.log('main', this.$refs.main)
    this.myEcharts = echarts.init(this.$refs.main);
    this.$refs.main.style.width = width + 'px';
    this.$refs.main.style.height = height + 'px';
    // this.myEcharts


    let option = {
      xAxis: {
        type: 'category',
        data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
      },
      yAxis: {
        type: 'value',
        axisLine: {
          show: false
        },
        axisTick: {
          show: false
        }
      },
      series: [
        {
          data: [150, 230, 224, 218, 135, 147, 260],
          type: 'line'
        }
      ]
    };

    this.myEcharts.setOption(option);


    // setInterval(() => {
    //   for (var i = 0; i < 5; i++) {
    //     data.shift();
    //     data.push(randomData());
    //   }
    //   this.myEcharts.setOption({
    //     series: [
    //       {
    //         data: data
    //       }
    //     ]
    //   });
    // }, 1000);
  },
}
</script>

<style lang="scss" scoped>
#main {
  //width: 600px;
  //height: 400px;
}
</style>
